Metal-cutting saw.



PATENTED SEPT. 11, 1906.

H. R. GEEK. METAL CUTTING SAW.

APPLIOATIGN FILED 11110.31, 1904.

[N VEN T OR.

WITNESSES,

.iHARRY'i R. GEEK, OF.;.JQHNST.OWN,. PEN YLVANIA. j

specification ,otiLetters B etent. Application filede=December 81,1904. ,SerialNo, 239,108.-

mErAL-currme saw.

IBatented-giiephl LiIQQB. I

. 1T0 aZZ whom it may concern:

.and useful improvements in Metal-Cutting Saws; and j I do hereby. declare the following to be a full, clear, and exact. description, of theinvention, such as ,will -enable others skilled in: the, art, to which: it appertainsto make and use. the same.

, My invention relates to novel improve-5 ;.saw.-teeth or ,cutters,and has specialreference' to. the shape: ofsaid teeth orcutters, also to the ir, novel, arrangement on the, periphery of.

the; saw-disk and my. object is to provide? sawrteethofan; economicals form which can c ufily held in their operative positions.

j In general my invention, cflonsistsof. saw- -teeth or cutters-which steel I provided with alternating manner.

same more clear refer to the one'sheet of draw ings, which form part .of this specificatiomand;

while Fig. 2 is a. top plan View thereof. Fig. 3is a section on line 3 30f Fig. 1. Fig. Lisa section online 4 4 of,Fig.1,,,and Fig. 5 is a section on line 5 5 of-Fig' l.

the opposite hand to'tooth 1,-and15 repres 'nts a center tooth with cutting edges 6-sym1netrical ,50; about. the centerline. of said tooth.

.7, 8, and 9 are locking-pieces-sinlilar in all respects to 1 each other, .;exce t that their ooves 10, 11, and "12 are rig t -hand,. leftand, and central, respectively,as shown,gto

.-- 55 conform to theinclination ,of;the various *p f j tingii-n theapertureilt), whichilat e provides .a place :-'for 5 the nut 1 18, which isments in; metalecuttingsaws withinsei'tible toothof eachgkindisshown on the drawin s,

are composed of plain} -tioned-, on-, the center line and 1 preferably rectangular j-pieces oftool-:

cutting edges ounjdthereon, said saw-teethbeing'adjusta ly ,se cured the} periphery. ofga. saw-disk in an 'Having thus given a general;-description of any invention,-I will now in order to-makethe of a portion of-a saw disk, {illustrating my improvements, ,ter ofthecutzto counteract'thezthrust from the exterior of, the right and *moved by Referring now to the characters of-referthe various teeth aforesaid.

es 4 areso shankv17,,.and a nut: 18.

1-4;-is:the .vi'ded with I groove; 16,? located at; the rearkside' ofsaid: re-

saw. d sk bl de, -Wb1'c1 iispr teeth, and each is provided witha tenoliill3; a .Beit known thatI,HARRY;R;GEER,aclti-i I zenof; the United States, residing at Johns town, ill? the county ofiQambria-and'State of;

recesses 1'5,in-its periphery and 5 Pennsylvania, 1 have invented certain j-new 20 -'is a socket ,orgopening. extendin from the recess 1 5* to and connectingwith 1;

8 ap". ert-ure '19 i;The shank- 1'Z of, the locking-piece extends through .saidisocket zfl: with itsend r mounted on .the threaded fendy-of shank 1'7.

aforesaid, as shown. Although only :one

it beun,d;erstood= .that the entire-perip .gery of the sawdisk is provided with teeth,-:-as' fshownjinseries.

, Referring now t0;Fi .s;,12,l3,-.4, and sgitwill be seen that the-teeth l and113projectffroin the, sawdisk on opI-posite rsidesfofj its oenter line'and extendslig t1 beyondfthe liile: the too hl of, the; saw-dis tween the. teeth 1..-an d,3. and; projects be its respectivesides, w

. theq-saw-diska shorten distance, as shown in if j Fig. :1 fBy this.-arrangernentof the-teethJI and :3 any binding 1 of the saw-disk is prevented. ,Furthermore any tendencypf the teeth; to crowd f together, -.and ,thereby;;cause fracture of g the same, is. ounteracted by;,the

location of the center tooth-5,. the ,upper edge of which is nearer. per edges of the other teeth,y.thus temporal-i y he.. awaxis;:thangth.eup-- leaving an abutment of. material in the, cenabutment remaining betweenthecuts of, the

readily,

means for .securinggthe saw teeth inposition are not included in th but form part of. the plication for gUnitdStates Letters Patent, filed on the samedate, Serial No. 239,109.

Althoughlhaveishownand described my is present invention,

improvements in.co nsiderable detail, aI 'do not wish tolbe; limited tothe-exact and-specific details shown or describeibut may use ,such ,-.substitutions ,modifications,

subject of another ap- Iio 1' to their Work, and means teeth in position.

- cutting edges equivalents thereof as are embraced within the scope of my invention and as pointed out inithe claims.

Having thus described my invention, what I claim, and desire to secure'by Letters Patent, is I 1. In a metal-saw, a plurality of insertible teeth, each composed of substantially plain rectangular pieces of metal, with cutting edges on the ends thereof and mounted in the periphery of-a metallic disk, said teeth being of three kinds, namely: a right-hand tooth, a left-hand tooth and a center of said center tooth being nearer the axis of the saw than the outer cute. ting edges of the other teeth, the'arrangement' of'said teeth being such as to leave a central abutment. of metal in the cut, thus balancing the pressure: on said right-hand and left-hand teeth, thereby holding them up for securing said 2. In-a metal-saw, a plurality of inserted I metal teeth of three kindswithcutting edges on the ends thereof, and mounted in the periple'ry of a-imetallic disk namely; a righttooth, the outer cutting edges thesaW-axis than the hand tooth, a left-hand tooth of said center tooth being nearer outer cutting edges of the other teeth, said rightehandand left-hand teeth being composed of rectangular pieces of steel shaped to throughout; the

thereby holding tooth, the outer and a center a blunt bevel on their outer ends, said center tooth being substantially rectangular arrangement of said teeth being such as to leave a central abutment ofmetal in the cut, thus balancing the pressure on said right-hand teeth and left-hand teeth, them up to their work, and means for securing said teeth in position.

3. In a metal-saw, a plurality of insertible teeth, each composed of a substantially plain rectangular piece of metal Withcutting edges on the ends thereof and mounted in the periphery of a metallic disk, said teeth being of three kinds, namely: a tooth inclined toward the right hand, a toothinclined toward the left hand and a tooth centrally located, all with respect to the median plane of said sawdisk; the extreme cutting edges of said center tooth being nearer the axis oflthe saw than the outer edges thus balancing the pressure on said righthand. teeth and left-hand teeth, thereby holding them curing said teeth in position.

In testimony whereof 1 hereto aflix my signature in the presence of two witnesses.

. I HARRY R. "Witnesses:

GEO. BEATTY,

ELMER LEAVEY.

of the other teeth, the 'ar-' rangement of said teeth being/such as to leave a central abutment of metal in the cut,

up to. their work, and means for se- 

